US926481A - Fire-extinguisher. - Google Patents

Description

D. I. GARRETSUN. FIRE BXTINGUISHBR. APPLIoATIoN FILED APRA, 190s.

Patented June 29, 1909.

2 SHEETS-SHEET 1.

D. I. GARRETSON.. FIRE EXTINGUISHER.

APPLICATION FILED APRA, 1908.

Patented June 29, 1909;

2 SHEETS-SHEET 2.

therein. Fie 7 is a cross section of t '75s. lieti? FIRE-ESTING`UISHER.

S'oeccetion of Letters Patent.

Eatented fune 2Q, 1939.

Application filed Apr 1, 1903. Seriai No. 125,158.

To all whom it 'may concern:

Be it known that l, Devro lnwiN GenitorsON, s citizen of the United Ststes, .residing at New York, in the county of New York and State of New York, have invented ncrv and useful lm roveinents in llireEXtinguisliers, of which t c following is a specification,

My invention relates to lire extinguishers in which the liquid is discharged 'oy the efr.- pansive force ot gas.

One of the objects oi my invention is to provide e fire extinguisher that can be inode to release compressed carbonio acid or other gas in installments or continuously to suit the will of' the operator for the purpose oi cre' ating a, pressure which will rorce the vliquid from the extinguisher.

Another object of rny invention is to provide means for erecting s pressure within'the tenir at the 'saine instant that the discharge passage is opened; and to provide means for closing the discharge passage at the salue instant that the pressure is cut oil.

Another object is to ineke allowance for the contraction and expansion of the lid uid in the tank due to variations in the temperature;

Another object is to provide a device which permits of the use of non-freezing compounds in lire extinguishers.

@ther und further objects will appear from the following speciiicstion.

ln the drawings, Figure is a front elevation ofs re extinguisher embodying niy invention; Fig. 2 is s view partlyin section showing the extinguisher when not in use Fig. 3 is a view similar to Fig.` 2, showing the relative arrangement of the parts when the extinguisher is in use; Fig. L1 is a plan view of the ton; rig. 5 is an inside View of the top; and 1g. 6 is an elevation oi the cartridge end means foropening the discharge-valve he lower end o? the gescartridge showing the pin valve. l

Referring to the drawings, in which the reference characters refer'- to the some parts on all views-.i2J shell or tanl': 1 provided at its upper open end with en interrupted lug thread 2, is surmounted by e ilangcd hoort casting 3 edo-pted to las iirrnly 1out releasabiy secured thereon oy means lugs efu' on the heed-cesting 3. Blurred to their end depending thereiroin, is 5 provided at its lower end strainer 5. .dpproninietely 1 height of the discharge-pipe 5, is soldered or otherwise securely fastened thereto, a small bracket 7 provided with on upwardly projccting pin S to be hereinafter referred to. Surrounding the pin 8 and su ported by the bracket 7, is a resilient niernlier, preferably a spring 9, .having secured thereto et its upper end a washer 10 to be referred to hereafter.

Referring more especially to Figs. 2, 3 end 5, the heed-casting 3 will oe seen to be provided with a slotted spherical recess or depression 11 within which an oilset cani por tion 12 olf the vulve-key 13 is permitted to revolve to operate the cartridge 20 as explained hereafter. The valve-key 13 is provided with a passage 14v and rotatably mounted within a cylindrical protuberance 15 upon the headecssting. lt 1s provided at its outer end with a goose-neck 16 and a, lever 17 lieving attached thereto, a hose 1S. ln the outer end of the hose, is secured a nozzle 19 inode without a stop-cock to render it impossible to cut oli vthe out-How during the generation of' pressure within the tank. The steel cartridge 2O ior containing compressed carbonio acidor other gas is of a well known design und needs no detailed description. Within; its lower end is provided a spring retained vulve adapted to be forced open to permit the outilow of coniined gas when the eartridge is forced downwardly over the in 8. Tirepin valve is shown in detail in iig. 7. The cap 25 is screwed into the neck of the cartridge by Ineens oi the threads 2G, until l the ilange 27 abuts against/thc end of the cartridge. .The upper cud 2S of this plug acts as a volvo scart with which the inside valve 29l` engages, to control the flow in and out of the cartridge. The valve 2) is screw threaded at 3() upon spind e 31 which passes down into the neck oi the plug und is providedwith en eulorgedihead 32. Between the head 32 of the spindle and the shoulder 323 ot' the plug there is placed a s )irai spring 234 which keeps the vulve normally closed. when in posi tion within the touli, said cartridge is held against lateral displacement by the discharge pipe and the lugs 1121, upon tlic under side of the cover 2:1. The lugs 21 :ire limited in length o permit the cartridge to be inserted end with lmwn luy shifting its lower eud sid ciw row to the .uli'c-iicy lll, (Shown 1 Il), -lic einer end oi: the s prorielcd it. s larger hole 22 Vtridge down over t e pin S which opens the Q ete,

through which the liquid is permitted to lloW -when the extinguisher is in use, and a smaller hole `which registers with a corresponding vent-hole 24 when the valve-key is in its normally closed position. From ythe drawings, it Will be apparent that the larger hole 22 which communicateswith the discharge pipe 5 when the valve-key is in its il uid-discharge p0sition,is disconnected from said discharge pipe during the normally closed position of the valve-key.

The method of operating the extinguisher may nov,T be readily understood and is as follows: Allowing the hose to hang i'loivnivard with the valve-key in the position shou'n in Fig. 2, the spring 9 is compressed by pressing doivraupon the Washer l() When the cartridge may be easily slipped into position With the valve oi the cart ridge directly o the opening pin Upon releasing the spring 9, t. Washer 10 immediately snaps into position against the flange surrounding the cartridge valve. Upon Vfilling the tank 1with the lireeXtinguishing liquid, the apparatus is ready for use. By raising the lever l? (which constitutes the outer end ci the valve-korf), upwardly in either direction, the cani-movement of the oliset ortion lf2 forces the earvalve in the cartridge and allows the gas to escape therefrom. The pressure thus created in the tank, forces the liquid through discharge pipe 5 from whence it may be di rected in any desired direction by means oi the nozzle i9. gWhen the valvc-key-lever i7 reaches a horizontal position while moving upwardly, the vent-hole is closed while the larger hole 22 is being opened and b r the time the cartridge has been forced own- Wardly suiiiciently far to force itsvaive open, the hole 22 has ooened completely. lo cut olf the ilovl, the jlever i7 is returned to its lowered position whereupon the supply of carbonio acid gas is cut oil simultaneously with the cessation of the ilorv of the liquid.

It will be seen that the vent-hole 23 is adapted to relieve any residual pressure in the tank when the same isl no longer in use, While at the same time, a convenient means is provided for allowing for expansion and contraction in the liquid due to changes in temperature to which the tank may be exposed. I

Owing to the simple construction oi the head-casting and the means provided for rcleasably securing the same to the tank, a quarter turn is all that is needed to lock or unlock the head-casting. As shown in the drawings, the entire uuchanism of thc extinguisher is attached to the head-casting which permits the apparatus to be prepared for operation willi a minimum expenditure oi' Lime and effort. Further advantages will bi' apparent in the simple construction, ease ol' manipulation and the Creation. oi pressure ssi Within the tank only at the times When the liquid is being used.

Having thus described my invention, the following is what l claim and desire to secure by Letters Patent:-

l. In a 'lire extinguisher, the combination with a tank fior liquid, of a heed therefor, a liquid discharge pipe depending from the head, normally closed cartridge slidably moun'led upon said discharge pipe, means carried by the discharge pipe for opening said cartridge, avalve ier controlling the flow ol liquid 'from the discharge pipe and a cani connected with said valve adapted to slide the cartridge along the discharge pipe.

2. in a 'lire extinguisher, the combination with a tank l'or liquid, of ahead; a discharge-pipe for liquid depending therefrom, a valve therefor; a gas-cartridge slidably suspended from the head and provided With spring-retained gas-valve; a pin for ensaid valve; and means adapted to open the discharge-pipe valve and to slide the cartridge into engagementv With the valve-engaging pin.

3. in a lire extinguisher, the combination with a liquid containing tank, having a vent, oi' a normali r closed retaining cartridfre adapted to discharge in said tank, normaLy closed discharge ipe for said tank and means adapted to simu' taneously open the gas cartridge and discharge pipe. and close said vent.

4. ln a tire extinguisher, thecombination with a tank for containing a liquid; a discharge pipe therefor provided With a valve;

a gas-cartridge slidable on the discharge- -pipe and provided with a valve a pin attached to the discharge-pipe and adapted to engage the valve of tie cartridge; and manually operated means for simultaneously operating the valve in the dischargepipe and moving the cartridge into engage1 ment with the pin.

5. ln a Yiire extinguisher, the combination with a liquid containing tank, of means for creating a pressure therein and a pivotal depending distributing pipe exterior of said tank and adapted when swung on its pivot to control the pressure creating means in said tank and the discharge of the liquid from the said tank.

6. A lire extinguisher comprising a tank lor liquid; a head provided with a recess and adapted to form an air-tight closure for the same a rigid discharge-pipe depending from the head 5 a bracket rigid thereon and provided With vertically projecting. pin; a Washer mounted resiliently upon said bracket; a valved gas cartridge seating at' one end Within the recessed head-casting and supported in a vertical position by said Washer; and a valve-key for controlling the flow el' liquid from the discharge-pipe and provided at one end with an oliset-carn lo."

forcing the gas-cartridge down upon the vertically projecting pin.

7. A tire extinguisherl comprising a tank pended from the head, a valve-key coinprising an angular tube having outlets l'or the discharge pipe and `lor a vent for the liquid chamber, said outlets boing adapted to be opened and closed alternately and said valve-key having afcani portion adapted to control the vflow of gas from the gas reservoir.

9. In a fire extinguisher, the combination ol' a liquid tank, a gas cartridge adapted to discharge in the liquid tank, a normally closed discharge pipe in the tank and a rotatable outlet key adapted to simultaneously cause the discharge ol' the gas from the gas cartridge and to open the discharge pipe and provided with an aperture which is .adapted to allow the release of pressure in the liquid tank when the gas cartridge is closed and to be closed when is turned to open the gas cartridge.

The foregoing specification signed at New VYork city, New York, this 20th day of Fel ruary, 1908.

DAVID l KVIN G'ARHETSUN l u presence ol' two witnessesloswELL S. NICHOLS, TnoMAs BERRY.

the outlet key

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